本文關鍵詞： 包被微量元素 育成豬 后備豬 育肥豬　出處：《沈陽農業(yè)大學》2017年碩士論文　論文類型：學位論文

【摘要】：微量元素作為必須的營養(yǎng)要素之一,直接或間接地參與著動物機體所有的生理生化過程。包被微量元素具備防結塊、防拮抗、提高微量元素利用率等優(yōu)點,目前沒有廣泛地在飼料添加劑中使用,值得在豬生產中展開應用研究。因此,本試驗旨在研究飼糧中使用包被微量元素添加劑在生長育肥豬中的應用效果,為包被微量元素在生長育肥豬上的應用提供科學依據(jù)。試驗一按日齡、體重基本一致的原則,隨機選取80頭體重約為25 kg的種用大白(Large White,LW)母豬,研究飼糧中添加包被微量元素對育成豬及后備豬生長性能、血清抗氧化指標和腸道微生物的影響。試驗結果如下:1)極顯著提升了育成豬及后備豬平均日采食量(P0.01),極顯著提升了育成豬平均日增重(P0.01),顯著提升了后備豬平均日增重(P0.05),顯著降低了育成豬及后備豬料重比(P0.05);2)顯著提升了育成豬血清總抗氧化能力(T-AOC)(P0.05),極顯著提升了血清超氧化物歧化酶(SOD)活性(P0.01)和谷胱甘肽過氧化酶(GSH-Px)活性(P0.01),顯著提升了后備豬谷胱甘肽過氧化酶活性(P0.05);3)極顯著降低了育成豬腸道大腸桿菌數(shù)量(P0.01),提升了腸道內乳酸桿菌和雙歧桿菌的數(shù)量(P0.01),顯著降低了后備豬腸道內大腸桿菌數(shù)量(P0.05)。對育成豬及后備豬乳酸桿菌和雙歧桿菌的數(shù)量有提升趨勢差異均不顯著(P0.05)。說明:飼糧中添加包被微量元素可提升飼糧的適口性和育成豬及后備豬的生長性能,提升育成豬的抗氧化能力,對育成豬及后備豬腸道的微生態(tài)平衡有一定的調節(jié)作用。試驗二按日齡、體重基本一致的原則,隨機選取80頭體重約為25 kg的杜洛克x大白二元(Duroc x Large White,DY)母豬,研究飼糧中添加包被微量元素對育成及育肥豬生長性能,血清及豬肉微量元素含量,屠宰性能和肉質指標的影響。試驗結果如下:1)極顯著提升了育成豬和育肥豬平均日采食量(P0.01),極顯著提升了育成豬日增重(P0.01);2)顯著提升了育成豬血清銅、Fe、Mn、Zn、Se含量(P0.05),顯著提升了育肥豬血清Fe、Se含量(P0.05);3)顯著提升了豬肉Fe、Mn含量(P0.05),顯著降低了豬肉Se含量(P0.05);4)極顯著提升了屠宰率、胴體長、眼肌面積(P0.01),極顯著降低了背膘厚(P0.01);5)顯著降低了豬肉滴水損失、剪切力(P0.05),顯著提升了肌內脂肪(P0.05)。試驗印證了飼糧中添加包被微量元素可提升飼糧的適口性和育成及育肥豬的生長性能,且說明:飼糧中添加包被微量元素可提升育成豬及育肥豬對某些微量元素的利用率,提升育肥豬的屠宰性能,有益于豬肉保存和提升豬肉嫩度。綜上所述,推薦在生長育肥豬飼糧中使用包被微量元素添加劑。
[Abstract]:As one of the essential nutrition elements, trace elements directly or indirectly participate in all physiological and biochemical processes of animal body. Coated trace elements have the advantages of preventing caking, preventing antagonism and improving the utilization rate of trace elements. At present, it is not widely used in feed additives, which is worth to be applied in pig production. Therefore, the purpose of this experiment is to study the application effect of dietary microelement additive in growing and fattening pigs. To provide scientific basis for the application of coated trace elements in growing and fattening pigs. A total of 80 white large large LW sows weighing about 25 kg were randomly selected to study the growth performance of adult pigs and reserve pigs fed with microelements. The effect of serum antioxidant index and intestinal microorganism. The results were as follows: 1) significantly increased the average daily feed intake (P0.01) of adult pigs and reserve pigs. The average daily gain (ADG) of adult pigs was significantly increased, the average daily gain (ADG) of back-up pigs was significantly increased (P0.05), and the ratio of feed to feed weight (FW) was significantly decreased. 2) the total antioxidant capacity of serum was significantly increased (P0.05). The activity of serum superoxide dismutase (SOD) and glutathione peroxidase (GSH-Px) were significantly increased (P 0.01). The activity of glutathione peroxidase (Glutathione peroxidase) was significantly increased (P0.05). 3) the number of Escherichia coli was significantly decreased and the number of Lactobacillus and Bifidobacterium in the intestine was increased significantly (P0.01). The number of Escherichia coli in the intestinal tract of swine was significantly decreased (P 0.05), but there was no significant difference in the number of Lactobacillus and Bifidobacterium in breeding pigs and in backup pigs (P 0.05). Conclusion: adding trace elements in diet can improve the palatability of diet and the growth performance of adult pigs and reserve pigs. Improving the antioxidant capacity of adult pigs has a certain regulatory effect on the intestinal microecological balance of adult pigs and backup pigs. The second test is based on the principle of day age and body weight. A total of 80 Duroc x Large White DY sows weighing about 25 kg were randomly selected. To study the effects of coated trace elements on growth performance, serum and pork microelement contents in finishing and fattening pigs. The effect of slaughter performance and meat quality index. The results were as follows: (1) the average daily feed intake (P0.01N) and daily daily gain (P0.01g) of adult and fattening pigs were significantly increased. 2) the content of Cu (Fe) mn (Zn) (se) in serum and the content of Fe (Fe) se in serum of fattening pigs were significantly increased (P 0.05N) and P 0.05N (P 0.05) respectively, and the content of Fe (Fe) se in the serum of fattening pigs was significantly increased. 3) the content of Fe and mn in pork was increased significantly, and the content of se in pork was decreased significantly. 4) the carcass length, the eye muscle area and the backfat thickness were significantly increased, the carcass length, the eye muscle area and the backfat thickness were significantly decreased. 5) the drop loss of pork was significantly reduced, and the shear stress was 0.05). The results showed that dietary microelements could improve the palatability of diet and the growth performance of fattening pigs. It is also explained that adding coated trace elements in the diet can improve the utilization rate of some trace elements in breeding pigs and fattening pigs, improve the slaughtering performance of fattening pigs, and be beneficial to the preservation and tenderness of pork. It is recommended that microelement additives should be used in the diet of growing and fattening pigs.
【學位授予單位】：沈陽農業(yè)大學
【學位級別】：碩士
【學位授予年份】：2017
【分類號】：S828.5
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本文編號：1470961